Patent GB-190420651-A (GB)
Title: Improvements in File and Rasp-cutting Machines.
Inventor: PEISELER GOTTLIEB
Filed: 1904-09-26
Granted: 1905-07-20
Abstract: 20,651. Peiseler, G. Sept. 26. File and rasp cutting machines.-Two file and rasp cutting machines, with various means for controlling the motions of the blank and hammer so as to produce curved, zigzag, and staggered rows of teeth, and cuts of varying depth and p i t c h, are shown in the Figures. The table 1 of the machine shown in Figs. 1,3, 14, and 21 is moved longitudinally in a crossslide 31 by a screw 29, a threaded sleeve mounted in bearings. 27, 28, a square - socketed wormwheel 25, and a worm on a shaft 14 which is driven in either direction by friction gearing 13, 12, or 11, and a crossed or open belt 4 or 3. The worm is mounted iu a block 18 carrying a roller engaging a templet 23 on a bar 22 connected with the screw 29, and is thereby slid along its shaft 14 to vary the traverse of the table 1. The lever 15 carrying the friction wheel 13 may be moved to reverse the motion of the table 1 by means of the winch-handle 86 and a rack and pinion, or by means of a spring (not shown) when the tension of the spring 62 is diminished, or by means of the inclined ends 54, 55 of a block 52 pivoted on the bar 22, and an arm 51 secured to the lever 15. To stagger the adjacent rows of cuts of a rasp, the back traverse of the table is alternately stopped in one of two positions by projections 46, 47 of different lengths on a wheel 45 which is half rotated at each double stroke of the table 1, or by having one end 55 of the block 52 shorter than the other 54 and the block moved on its pivot 53 at each double stroke of the table so as to bring either end 54, 55 in line with the arm 51 by a pivoted pin 58, which is returned to a vertical position by guides 59 during the forward stroke of the table. The cross-slide 31 has some play between the nuts 33, 34 on its operating-screw 32, and is pulled towards the former by a spring 38 which allows the slide to be reciprocated, and a zig-zag or curved row of cuts to be made, by a templet 39 travelling with the table and either bearing against the nut 34 or oscillating a quick-pitched nut screwed on the nut 34 and abutting against the side 40 of the cross-slide, or by a curved bar 39<b> which is rotated in its bearings 44 to change and reverse the curvature of the rows of cuts. During the return stroke of the table, the slide 31 is moved laterally by gearing 35, 36. The hammer 63 is raised by the cam 72 and depressed with variable force by a spring 76, a lever 78, a longitudinally-adjustable rod 79<a>, and a templet 79 on the bar 22. The pivot of the hammer is moved around a centre 65 or otherwise to vary the height of lift and the inclination of the chisel 66 by a longitudinally-adjustable rod 68 and a templet 71 on the bar 22. The blank is held on the table by a finger 105 projecting from a sleeve on a shaft 101, but, at the end of each forward traverse of the table, a catch locking together arms on the shaft and sleeve is withdrawn by means of a dog on the bar 22, the finger is raised by a spring, the spring 62 slackened to reverse the table 1, and the cam 97 rotated to hold the hammer up, by a weight 98. The catch and the cam 97 and shaft 101 are returned to their normal positions by a lever 110 and a system of levers 103. The rope 81 attached to the hammer 63 and to the pivoted catch 84 causes the feed to be intermittent. In the machine shown in Figs. 22, 25, 26, and 29, the table 140 is slidably connected at 166 with a nut 138 on a screw 137 which is driven from the main shaft 112 by open and crossed belts and by friction reversing- gear 120, or by a handle 132. To the nut 138 is also secured the pattern-bar 139, and to the slide 165 is secured a bar 173 working through a hole in the cross-slide 142 and supporting the end of a templet 175 for causing the rows of cuts to be zig-zag or curved &c. The cross-slide 142 is moved laterally by springs so as to keep the templet in contact with a roller 182 on one of the two nuts on the operating-screw 143 of the cross-slide. The templet, the table 140, or both may be rotated by worms and a handle 172. The screw 143 is rotated during the return of the table by a pin on the bar 139, a lever 151, a pawl 152, and a ratchet-wheel 150. On the forward stroke of the table, a weighted rope 155 returns the lever 151 to a stop 156, the position of which is regulated by a rack and pinion 158, 157. The pawl 152 is raised by means of a lever 164 and a disc 162 connected with the pivoted handle of the winch 149 by a rod which passes through the hollow screw 143, when the latter is to be rotated by hand. The hammer 186 is pivoted on the crank-pin of a shaft 188 and is raised by a cam 190 and depressed by a spring 198, the force of the spring and the lift of the hammer being varied by screws 199<a>, 189. The shafts 200,188 are oscillated to vary the strength of blow, lift of hammer, and closeness of cuts by a templet 197 on the bar 139. The chisel-holder 204 is pivoted to the hammer and is limited in its motion by a spring 209 and by a rod 206 which is adjusted by an eccentric-ended pin 208, a train of gearing, a sliding rack 212<a>, and a templet 213 on the cross-slide 142. The finger 214 for holding the blank on the table 140 is raised by a spring 217 and depressed by springs 227, 236 when its shaft 216 is clutched to the shaft 218. The clutch 220 is normally kept in gear by a spring 223, but is thrown out of gear by the projection 257 and a dog 258 on the bar 139 at the end of the forward stroke of the table 140, or by means of the lever 256. The shaft 218 carries a three-armed sleeve, of which the arm 224 is connected by a chain and spring 227 with the reversing-mechanism 120, the arm 229 is connected with the treadle 232, and the arm 230 is connected by a chain with a pulley 234 on a shaft which also carries a pulley 193<a> connected with the spring 236 and a cam 193 for holding the hammer in a raised position. On the shaft 218 are also two fixed arms 239, 240 connected by a bar 241, and a cam 237, with one, two, or more projections a, b, c in different planes, driven by a chain 238 from the shaft 112. When a catch 242 pivoted on the bar 241 engages one of the projections a, b, c, the shaft 218 is rotated to allow the clutch 220 to be engaged, the catch being then knocked back by the stop 244, while the finger 214 prevents the springs 227, 236 from rotating the shaft backwards. The projections are angularly-spaced as shown in Fig. 25, and the catch 242 is moved opposite them in turn by a lever 272, gearing 274, 275, 277, and a dog 276 on the bar 139 so as to start the feed-mechanism when the hammer cam 190 has rotated more or less so as to stagger the rows of cuts. When the stop 266 is turned aside by a lever 269 and a pin 270 on the cam 237, an arm for holding the catch 242 out of gear can be lowered by means of levers &c. 249, 250, 251, 252, the shaft 253, and the lever 256. When the tension of the spring 227 is released, a spring 262 reverses the gearing 120, except when a stop on the bar 139 limits the motion of the rod 261 to bring the machine to a standstill.